Can the Cola

You've heard it again and again — H2O, at zero calories, is the best diet drink. But if you're still hooked on high-cal beverages, check out these numbers: Researchers who tracked 240 overweight women found that those who replaced sweetened drinks with water lost five more pounds, on average, than those who didn't. Why these sips add up: A can of Coke is 146 calories; a cup of grape juice, 154 calories.